Exponential distribution of long heart beat intervals during atrial fibrillation and their relevance for white noise behaviour in power spectrum

Details Exponential distribution of long heart beat intervals during atrial fibrillation and their relevance for white noise behaviour in power spectrum Exponential distribution of long heart beat intervals during atrial fibrillation and their relevance for white noise behaviour in power spectrum

2006-05-11

arxiv.org/abs/cond-mat/0605295v1

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

The statistical properties of heart beat intervals of 130 long-term surface electrocardiogram recordings during atrial fibrillation (AF) are investigated. We find that the distribution of interbeat intervals exhibits a characteristic exponential tail, which is absent during sinus rhythm, as tested in a corresponding control study with 72 healthy persons. The rate of the exponential decay lies in the range 3-12 Hz and shows diurnal variations. It equals, up to statistical uncertainties, the level of the previously uncovered white noise part in the power spectrum, which is also characteristic for AF. The overall statistical features can be described by decomposing the intervals into two statistically independent times, where the first one is associated with a correlated process with 1/f noise characteristics, while the second one belongs to an uncorrelated process and is responsible for the exponential tail. It is suggested to use the rate of the exponential decay as a further parameter for a better classification of AF and for the medical diagnosis. The relevance of the findings with respect to a general understanding of AF is pointed out.

Affiliated with

Also associated with

No associations

Rating

Exponential distribution of long heart beat intervals during atrial fibrillation and their relevance for white noise behaviour in power spectrum does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Exponential distribution of long heart beat intervals during atrial fibrillation and their relevance for white noise behaviour in power spectrum, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exponential distribution of long heart beat intervals during atrial fibrillation and their relevance for white noise behaviour in power spectrum will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-469346